Dynamo-electric machine.



B. A.BEHREND. DYNAMO ELECTRIC MACHINE. APPLICATION IiLED MAY 27, 1907.

925,272. Patented June 15, 1909.

.2 ESWg. l 2 10 25 11 2/ I 2; j 1 z? I 14 1; W L

x vwavxcm Be/mmd QWBJvwmi UNITED STATES PATENT OFFICE.

lll liiXL-U'll) A. DFHREND, OF 'NORWOOD, OHIO, ASSIGNOR TO ALLlS-(JHALMERS COMPANY, A

(ORIOHA'IION OF NEW JERSEY. AND THE BULLOCK ELECTRIC MANUFACTURING GOM- lAN Y. A CORPORATION OF OHIO.

DYNAMO-ELECTRIC MACHINE.

No. 925,272. Specification of Letters Patent. Patented June 15, 1909.

Application filed May 27, 1907. Serial No. 375,812.

all whom/it may concern: of the housing and is supported in bearings Be it known that LBERNARD A. BEIIREND, 15. These bearings a e mounted in hollow citizen of the United States, residing at Non pedestals 16, which together with the houswood, in the county of llamilton and State ing 10 are. supported on. a base 17, in turn ol Ohio, have invented certain new and useresting on a foundation 18 of any desired lul improvements in Dynamo-Electric Macharacter. chin-es. of which the following is a full, clear, The passageways 19 formed in the pedesand exact specification. tals 16 are connected to any suitable source My invention relates to the ventilation of of air supply preferably through conduits in lynamo-electrie machines. the foundation At their upper ends (-ertain types of d ynamo-electric machines these passageways 1!) communicate with latrequire a forced circulation of air through oral openings-20 which register with openings and round them in order to dissipate the 21 in the walls of the housing. Partitions 22 heat which is generated. In order to obtain guide the inllowing air upward to a chamber this the dynamo-electric maehincshave often 22 around the shaft 13 whence it is thrown been inclosed inahousing and the circulation outward by fans 23 into the chambers 24. '70 of air has been maintained by fans or blowers From these latter chambers the air passes on the rotating element. The air from some upwardly I through the circumferential pas-- suitable source has heretofore generally been sages 25 in the stationary element 11 and led into the housing through admission around the periphery of the rotating element chambers located at the ends of the housing 12 to the opening 26 at the .top of the housand extending upward from the bottom. ing. where it escapes. This circulation of air thereof to the shaft. I-lowever, this location through the machine is maintained by the of the admission chambers has necessitated fans 23 a great distance between the bearings, thus By utilizing the pedestals 16 as conduit-s tending to decrease the rigidity of the rotatfor the inlet of air instead of having separate mg structure. conduits for this purpose, it is possible to It is the object of my present invention to lessen the distance between the bearings 15, so arrange and. combine the parts of a dythus increasing the rigidity of the rotating name-electric machine and its housing that structure, and also sii'nplifying the structure, the space between the bearings formerly ocdiminishing the cost, and improving the gencupied by these admission chambers may be eral appearance of the machine.

saved, thus allowing the bearings to be Many modifications can be made in the place-d closer together. precise arrangements shown and described A further object of my invention is to simand all such which do not involve a departure plify/ the structure of the machine. from the spirit and scope of my invention I These objects are attained by leading the aim to cover in the following claims. air from a suitable source through hollow l/Vhat I claim as new is )edestals supporting the bearings into the 1. The combination in a dynamo-electric housing of the machine. machine, of the fixed and movable elements The novel features of my invention will of said machine, a housing therefor which appear from the description and drawings supports one of said elements, and. hollow and will be particularly pointed out in the pedestals supporting the other of said eleclaims. ments and serving as conduits through which Figure 1 shows a vertical longitudinal secair is admitted into said housing. tion of a dynamo-electric machine embody- 2. The combination in a dynamo-electric ing my invention; and Fig. 2 is a'section on machine, of a housing sup orting one elethe line. 2'2 of-Fig'l. ment of said machine anr provided with The main portion of the housing 10 sup openings, bearings supporting the other eleportsthe stationary element 11 ofa dynamoment of said machine, and hollow pedestals electric machine, here shown as a turbosupporting said bearings and provided with alternator. The rotating element 12 of this openings'which register with the openings in machine is mounted on a shaft 13 which ex the housing to allow air to be admitted into tends through openings in the end walls 14 said housing through said pedestals.

3. The combination in a dynamo-electric machine, of the stationary and rotatable members of said machine, a housing supporting the stationary element and provided with openings, a shaft carrying the rotatable element, bearings for said shalt, hollow pedestals supporting said bearings and provided with openings which register with the openings in said housingv and means mounted on said shaft for causing. the circulation of air through said pedestals and housing.

4. The combination in a d vnamo-elertrie machine, of the relatively movable elements of said machine, a housing therel'or, bearings for one of said elements, a hollow pedestal supporting one of said bearings and communicating with said housing, and means for causing the circulation of air through said pedestal and housing.

5. In a dynamo-electric machine, the comhination of the iiXed and movable elements thereof,"an inclosing housing therefor, andf means for supporting said movable element, said means including a hollow pedestal which serves as a conduit for conducting into said housing a fluid for cooling sai members.

6. In a dynamo-electric machine, the commachine, of the fixed and movable elements of said machine, a housing for said machine,

said housing being provided with inlet and outlet openings, hearings or said movableelement, and hollow pedestals supporting said bearings and provided with openings which register with the inlet openings of the housing, and means for forcing air into said housing through said hollow pedestals and said inlet openings.

8. The combination in a dynamo-electric machine, of the fixed and movable elements of said machine, bearings for said movable element, hollow pedestals supporting said hearings and provided with openings,a housing for said machine, said housing being provided with inlet openings with which the openings in the pedestals register, -and with an outlet opening at the top, and means for causing a flow of air through said hollow pedestals, inlet openings, housing, and outlet opening.

t). In adynamo-electric machine, the combination of the relatively movable elements of said machine, a housing for said machine, said housing being provided with openings, hearings l'or one of said elements, hollow pedestals supporting said bearings and provided with openings which register with the openings in said housing, means for causing a flow of air through said pedestals, openings, and housing.

In testimony .rhereol' l allix my signature, in the presence of two witnesses.

BERNARD A. lSlCllRlCNl).

Witnesses:

Gno. B. SonLnY. rnnn J. Kmsnv. 

